shared-network

[Niall O'Reilly]

On 11 Nov 2010, at 18:07, Laszlo Fekete wrote:

> Just another question: I have some clients without fixed address and
> they get ip dynamically from 192.168.5.0/24 , so this stored in
> dcpd.leases. But later give them fixed address from 160.1.2.0/26. Is it
> possible if the client don't send dhcpdiscover just dhcprequest with the
> dinamic ip, than the dhcp server give ip from static pool even if there
> is a lease in leases file or delete the lease which mac address has a
> fixed address in dhcpd.conf at dhcpd reload/restart?

	You'll probably need complementary 'deny' statements in the
	corresponding pools.  Here's what we do.

    shared-network some-name {

        subnet 137.43.162.0 netmask 255.255.255.0 {
            option subnet-mask 255.255.255.0;
            option routers 137.43.162.1;
            pool {
                range 137.43.162.129 137.43.162.190;
                deny unknown clients;
                max-lease-time 7200;
            }
        }

        subnet 10.137.162.0 netmask 255.255.255.0 {
            option subnet-mask 255.255.255.0;
            option routers 10.137.162.1;
            pool {
                range 10.137.162.65 10.137.162.94;
                deny known clients;
                max-lease-time 600;
            }
        }
    }